Cyanuric acid

Density

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

relative density

Type of information:

not specified

Adequacy of study:

weight of evidence

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

abstract

Principles of method if other than guideline:

Abstract only -no details on materials and methods

GLP compliance:

not specified

Type:

relative density

Density:

1.75

Temp.:

20 °C

Abstract only:

D. was measured at -5° for dl-arabinose 1.609, d-xylose 1.535, galactose 1.616, d-mannose 1.554, sorbose 1.611, inositol 1.616, mannitol 1.492, sorbitol 1.472, glyceraldehyde 1.593, gluconolactone 1.610, ascorbic acid 1.714, glyoxal polymer 1.739, paraformaldehyde 1.486, glycolide polymer 1.607, glycogen 1.629, arabonamide 1.468, gluconamide 1.545, formaldoxime 1.434, a,a'-diaminosuccinic acid 1.674, hexamethylbenzene 1.064, fructose 1.580, glycocoll 1.595, dl-serine 1.603, glucosaminic acid 1.618, b-alanine 1.437, l-a-alanine 1.432, glycylglycine 1.554, biuret 1.467, 1, 2-hydrazinedicarboxamide 1.604, carbohydrazide 1.616, oxalic hydrazide 1.458, hydrazine 1.146, semicarbazide 1.484, hydrazomethylcarbonate 1.364, glycolamide 1.415, galactose oxime 1.525,cyanuric acid 1.753, parabanic acid 1.712, alloxan 1.839, hexamethylenetetramine 1.331, and di-Et 1,2-hydrazinedicarboxylate 1.324

Conclusions:

Cyanuric acid has a density of 1.753

Reference 2

Endpoint:

density, other

Remarks:

Specific gravity

Type of information:

other: handbook data

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Principles of method if other than guideline:

No method stated. Handbook data which provides results only.

GLP compliance:

not specified

Type:

other: Specific gravity

Density:

1.77

Temp.:

20 °C

Conclusions:

The specific gravity of cyanuric acid is 1.768 g/ml

Reference 3

Endpoint:

relative density

Type of information:

calculation (if not (Q)SAR)

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Principles of method if other than guideline:

The relative denisty of cyanuric acid was able to be calculated from crystallographic data. This is an accurate measurement of specific gravity.

Type:

relative density

Density:

1.78

Temp.:

23 °C

Table 1: Crystallographic data for cyanuric acid

Space group C2/n Z =4

Coordinates of the equivalent positions (0,0,0; 1/2, 1/2, 0) +

C (2) N(2), O(2), H(2) m = 8 ± (x, y,z) ± (1/2 - x, y, 1/2 - z)

C (1), N (1), O(1), H(1) m = 4 ± (1/4, y, 1/2)

Cell dimensions:

	296°K	100°K
a	7.900	7.749
b	6.732	6.736
c	11.951	11.912
beta (°)	130.67	130.697

Table 2: Calculation of density from X-ray data.

Monoclinic cell: V= abc sin(beta) Density (g/mL) = factor x MW x Z/V

a	b	c	beta	Sin beta	Vol	Z	MW	Density	°K	°C
7.749	6.736	11.912	130.69	0.758248	471.46	4	129.08	1.818	100	-173
7.9	6.732	11.951	130.67	0.758476	482.08	4	129.08	1.778	296	23
7.9	6.74	9.04	90	1	481.34	4	129.08	1.781

Conclusions:

The relative density (specific) gravity of cyanuric acid can be calculated from the crystallographic data as 1.778 g/ml @ 23°C and 1.818 g/ml @ -173°C

Reference 4

Endpoint:

density, other

Remarks:

specific gravity

Type of information:

other: Handbook data

Adequacy of study:

weight of evidence

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Principles of method if other than guideline:

No method stated. Handbook data - results provided only

GLP compliance:

not specified

Type:

other: specific gravity

Density:

1.75 other: g/ml

Temp.:

20 °C

Conclusions:

Cyanuric acid has a specific gravity of 1.75 g/ml

Description of key information

Several sources of literature are available. The relative density of cyanuric acid is 1.75.

Key value for chemical safety assessment

Relative density at 20C:

1.75